Yamaha YZ450FA 2011 Owner's Service Manual page 299

Fault code No.
Symptom
Fail-safe system
Diagnostic code No.
FI diagnostic tool dis-
play
Checking method
Item Item/components and probable cause Check or maintenance job
2 EEPROM data error (CO adjustment
value)
3 EEPROM data error (Power Tuner ad-
justment values for fuel injection
amount or ignition timing)
4 Malfunction in ECU.
44
Error is detected while reading or writing on EEPROM.
Able to start engine (depending on circumstances)
Able to drive vehicle (depending on circumstances)
D60
00: No fault
01: CO adjustment valve
07: Power Tuner adjustment values 0–8 for fuel injection amount or ignition
timing
—
Change the CO density and
write the changed setting on
EEPROM.
Erase the setting map in the
diagnostic mode (diagnostic
code No. D65).
Replace the ECU.
7-37
FUEL INJECTION SYSTEM
Checking method
Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
peat item 1. If the
fault code number is
still displayed, refer
to item 4.
Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 1.